Locomotive-grate



4 ing rapidly burned out.

'IhvirEn Y STAT S PATENT O FICE.

ISAAC w. SWALLOW, or KINGSTON, PENNSYLVANIA.

LOCOMOTIVE-GRAIII'E.

SPECIFICATION forming part of Letters PatentNo. 293,602, dated February 12, 1884.

Application filed October 29, 1883. (N 0 model.)

To all whom it may concern:

Be it known that I, ISAAC WV. SWALLOW, a

citizen of the United States, residing at Kings- IO pertains to make and use the same, reference being had to the accompanying drawings, and toletters or figures of reference marked there on, which form a part of this specification.

Figure 1 of the drawings is a representation of a vertical longitudinal sectional view, Fig.

2 is a vertical transverse sectional view, Fig. 3 is a vertical transverse sectional view, and Fig. 4. is a plan view, of the improved gratebars for locomotives.

This invention relates to grates for loeomotives, andis designed as an improvement upon the Letters Patent granted to me November 18,

The invention consists in the construction and novel arrangement of devices, as will be hereinafter more fully set forth and claimed.'

Referring by letter to the accompanying drawings, a designates the fire-box, which is rectangular in form, and-is provided with the hollow longitudinal water-bars b 2), arranged in pairs in the end walls of the fire-box, and resting on intermediate cross-bars, 00, near the bottom of the fire-box.

d d d d d d are the tumblenbars, which are free at their ends, and are connected intermediately by bolts and nuts 6 to the upper ends of curved arms ff, pivoted in bearings between the cross-bars c c. v The tumbler-bars d d are of solid iron, and are smaller than the water-bars b b, and rest, when in their normal positions, in notches in the upper edges of the cross-bars. c c on a level slightly lower than the grate or water bars, in order that the latter may protect them and prevent them from be- The lower ends of the pivoted arms f are straight, and are connected by slotted bars 9 9, their ends being pivoted in.

the slots h h and h by nut-bolts. The upper ends of the pivoted arms f are curved, as shown,

so that when the tumbler-bars d d are raised they will come directly over the space between V the water-bars of each pair.

At one side of the grate a tumbler-bar, 7:, is arranged in each section of the grate, to be drawn under the water-bars 1) next to them, instead of being raised over, 'as the other tumbler-bars are. The single bars-11 are connected to two inclined transverse arms, k k, near their ends, by nut-bolts Z, and these arms k are connected at their other ends by nut-bolts m to short rigid arms a n, depending from the shaking-rods 0 0, which have bearings in the end walls of the fire-box and in the crossbars c c. The tumbler-bars dd are made in sections viz., front and'rear sectionsso that the front and rear portions of the fire can be shaken separately, one being shaken without disturbing the other. The shake-rods o 0 are provided with additional arms p p, connected to the arms a n by rods q, to strengthen the connections at these points. The shaking-rod 0 of the grate extends the entire length of the fire box. The rod 0 extends only the length of the front section, and both rods are operated by-a shaker from the exterior of the fire-box without opening the door of the same, except to re plenish the fuel. v

The advantage arising from constructing the grate in two sections (front and rear) is that it only takes one-half the power to operate it that would be required if it were wholly one piece. It makes the bars shorter, and there:

by prevents springing or warping. In sections, either end of the fire may be fixed without disturbing the other. This is a decided advantage when the engine is to be housed, as

only one-half of the fire need be knocked out. This will give the operator an opportunity to work the front end of the fire until it is out, leaving the back end of the fire, as it is customary to do. The advantages of this construction are obvious, and will be readily untending longitudinally of the fire-box, in combination with the front and rear sections of I00 connected tumbler-bars, operated by shakingrods from the exterior of the fire-box, substantially as specified.

2. In a fire-grate .for locomotives, the com-- 'derstood from the description, when taken in I bination, with the water bars extending longi- Intestimony whereof I nffix my signature in tudinally 0f the fire-box, of the tumbler rods presence of two witnesses. or bars, connected to the slotted connecting- T T bars by an intermediate and two outer arms, ISAAC ALLOW 5 and a connecting-rod passed through the sev- Witnesses:

eral arms and the slotted connecting-bar, sub- T. D. THOMAS, stantially as specified. E. H. HOUSE. 

